Water → N-(1-cyanocyclopropyl)-2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide

Participants

Reaction Steps

A mixture of 2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxylic acid (90 mg, 0.29 mmol), 1-aminocyclopropanecarbonitrile hydrochloride (41 mg, 0.348 mmol), EDCI (110 mg, 0.58 mmol) and DMAP (75 mg, 0.58 mmol) in DMF (5 mL) was stirred at room temperature for 16 hours. Then the mixture was poured into water (5 mL) and filtered to give the crude product which was purified by preparative-HPLC (Gemini 5u C18 150×21.2 mm; inject volume: 3 mL/inj, flow rate: 20 mL/min; wavelength: 214 nm and 254 nm; the gradient conditions were: 40% acetonitrile/60% water (0.1% trifluoroacetic acid, v/v) initially, proceeding to 55% acetonitrile/45% water (0.1% trifluoroacetic acid, v/v) in a linear fashion over 9 min.) to give N-(1-cyanocyclopropyl)-2-(6-fluoro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxamide (25 mg, 23%) as a white solid. MS: (M+H)+=376; 1H NMR (300 MHz, DMSO): δ 12.95 (s, 1H), 9.10 (s, 1H), 8.87 (s, 1H), 8.56-8.53 (m, 2H), 6.69 (d, 1H, J=8.7 Hz), 7.26 (t, 1H, J=8.7 Hz), 4.15 (s, 3H), 1.70 (brs, 2H), 1.64 (brs, 2H).

Provenance & Evidence